Knowledge · 03.10.2025

Kerstner refrigerated conversions: what really matters in daily use

A Kerstner refrigerated conversion must do more than get cold. It must maintain the temperature, be quick to clean and fit the business’s daily routines. What matters is therefore not individual components, but how interior insulation, floor, doors, refrigeration unit and load space organisation work together. Clarifying these points early avoids complaints, extra journeys and unnecessary downtime.

What makes a Kerstner refrigerated conversion a working vehicle?

A refrigerated vehicle is a tool. It is loaded, cleaned, opened and closed, following the same daily rhythm. Simply fitting a van with a refrigeration unit is therefore not enough. The conversion must suit the goods, the route and the cleaning process.

Kerstner manufactures refrigerated vehicle conversions, interior insulation and refrigeration technology in Groß-Rohrheim. This benefits customers because the components are planned together. The refrigeration unit must suit the insulation, the floor must suit the cleaning process and the doors must suit the frequency of stops.

For an initial overview, you can find suitable vehicle pages in the vehicle overview. For help choosing a refrigeration unit, see the The CoolJet range. To discuss the specific requirements, direct contact with sales is the quickest route.

Which details matter in everyday deliveries?

Small details make a big difference in daily deliveries. A door seal does not save time simply by looking new. It saves time when a driver makes 25 stops on a warm day. A robust floor is not what catches the eye in a brochure. Its value becomes clear when the load space is cleaned every evening.

Detail Everyday benefit Typical question before planning
Double seals more stable temperature with frequent door openings How often are the doors opened per route?
Aluminium chequer plate floor robust, easy-to-clean load floor Is wet cleaning carried out daily?
Airline rails flexible securing of boxes and roll containers Which load carriers are used?
LED interior lighting better visibility when picking orders Is loading carried out early in the morning or in the evening?
Strip curtain less heat entering through the rear door How long does the door remain open?
Temperature recorder evidence for audits and complaints Does the temperature need to be documented?

Technical requirements also depend on the rules for food transport. The international ATP agreement of the UNECE sets out requirements for cross-border transport of perishable foodstuffs.

Which vehicle sizes make sense?

Small delivery vehicles suit short journeys, pharmacy logistics or delicatessen deliveries. Mid-size vans such as Vito, Expert or Transporter suit urban and catering routes. Larger vehicles such as Sprinter, Crafter, Daily or Ducato become attractive when volume, payload or pallet capacity matter more.

A blanket recommendation would be misleading. A Caddy may be ideal for a pharmacy. A Vito may be a better fit for catering. A Sprinter or Crafter may be needed for store deliveries. The deciding factors are the goods, volume, temperature range and number of stops per route.

Why is the refrigeration unit only part of the decision?

The refrigeration unit provides capacity. The overall conversion determines whether that capacity reaches the product. Insufficient insulation increases energy demand. A poorly organised load space blocks airflow. Doors left open too long let heat into the load space.

That is why we assess the refrigeration unit, interior insulation, base vehicle and payload together. With electric refrigeration, another distinction remains important: an electrically powered refrigeration unit does not automatically mean the vehicle has a battery-electric drive.

What does this mean for you?

FAQ

Which vans does Kerstner convert?

Kerstner produces refrigerated conversions for many common van models. These include Mercedes-Benz Citan, Vito and Sprinter, VW Caddy and Crafter, MAN TGE, Iveco Daily, and models from Fiat, Ford, Opel, Peugeot, Citroën and Renault. Suitability is assessed for each project.

Is every refrigerated conversion ATP-compliant?

No. ATP depends on the body, insulation, temperature range and supporting documentation. If ATP is required for export, a tender or a customer, this should be raised early in planning.

Which matters more: refrigeration unit or insulation?

Both must work together. A powerful refrigeration unit cannot adequately compensate for unsuitable insulation. Equally, good insulation only helps if the refrigeration capacity matches the route.

What information does Kerstner need for an initial assessment?

The key details are the goods, temperature range, preferred vehicle, load volume, stops per route and cleaning requirements. Photos or existing vehicle data are also helpful.

Final call to action

Send Kerstner the base vehicle, goods and route profile. The direct contact with our sales team will lead to the right recommendation.

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